An Objective Method of Forecasting Five-day Precipitation for the Tennessee Valley

An Objective Method of Forecasting Five-day Precipitation for the Tennessee Valley PDF

Author: William H. Klein

Publisher:

Published: 1949

Total Pages: 68

ISBN-13:

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The investigation to be described in full in this report was started as a pilot project in July 1946, in an effort to improve and render more objective the precipitation anomaly estimates based on prognostic circulation patterns. Precipitation rather than temperature was investigated, because the forecast verification scores had been consistently lower on precipitation than on temperature forecasts.

An Objective Method of Forecasting Five-day Precipitation for the Tennessee Valley

An Objective Method of Forecasting Five-day Precipitation for the Tennessee Valley PDF

Author: William H. Klein

Publisher:

Published: 1949

Total Pages: 60

ISBN-13:

DOWNLOAD EBOOK →

The investigation to be described in full in this report was started as a pilot project in July 1946, in an effort to improve and render more objective the precipitation anomaly estimates based on prognostic circulation patterns. Precipitation rather than temperature was investigated, because the forecast verification scores had been consistently lower on precipitation than on temperature forecasts.

Possibility of Long Range Precipitation Forecasting for the Hawaiian Islands

Possibility of Long Range Precipitation Forecasting for the Hawaiian Islands PDF

Author: Samuel B. Solot

Publisher:

Published: 1948

Total Pages: 666

ISBN-13:

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In order to establish a meteorological forecasting system, it is necessary to find a direct relationship between measurable physical states of the atmosphere and the end product, the weather element to be forecast. The long range forecaster is quite limited in his choice of physical parameters. In fact only the very large-scale dynamics of the atmosphere which can be expressed in terms of mean pressure patterns are amenable to long range analysis. Thus the problem reduces to finding a link between mean planetary pressure patterns and precipitation in the Hawaiian Islands

Three-dimensional Wind Flow and Resulting Precipitation in a Northern California Storm

Three-dimensional Wind Flow and Resulting Precipitation in a Northern California Storm PDF

Author: United States. Weather Bureau

Publisher:

Published: 1963

Total Pages: 56

ISBN-13:

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By careful consideration of the observed winds and with the aid of various empirical and dynamics relationships, a steady-state 3-dimensional wind flow is deduced over northern California for a 24-hour stormy period. The production (or evaporation) of precipitation elements is estimated for all parts of the flow, the surviving elements are followed down to the surface, and the resulting precipitation with the observed.

Predicting the Runoff from Storm Rainfall

Predicting the Runoff from Storm Rainfall PDF

Author: Max Adam Kohler

Publisher:

Published: 1951

Total Pages: 12

ISBN-13:

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The estimation of the volume of runoff to be expected from a given volume of rainfall is a fundamental problem in flood forecasting. Such estimates are necessary before the unit hydrograph or other techniques can be used to predict the streamflow hydrograph. The authors describe the technique now used at the River Forecast Centers of the U.S. Weather Bureau for evaluating the effect of season, antecedent conditions, duration of rainfall and rainfall amount in determining the portion of the rainfall contributing to storm runoff. Special problems encountered in flood forecasting are emphasized. The technique, developed and tested over several years, yields a high degree of accuracy in estimated runoff. Although prepared by empirical procedures, the close agreement between relations for basins of similar hydrologic characteristics suggests that rational parameter have been adopted. The similarity between relations also simplifies the work required for their preparation.

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